McDonald’s adopted “i’m lovin’ it” as its global advertising slogan in 2003.
The campaign was introduced internationally in 2003 and marked a major effort to give McDonald’s advertising a more unified worldwide identity. The lowercase wording and contraction created a casual, conversational style that differed from more formal corporate slogans.
The campaign used music, television commercials, and localized executions while keeping the central phrase consistent. Its launch is also associated with a song and recordings by Justin Timberlake, but the slogan itself is the branding element that became the long-term corporate tagline.
People sometimes confuse the slogan’s launch date with the release dates of individual commercials or music recordings. Those dates can differ by market. The key branding milestone is 2003, when McDonald’s began using “i’m lovin’ it” as its global campaign platform.